Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/opensubdiv-source/opensubdiv/osd/clPatchTable.h

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+//
+//   Copyright 2015 Pixar
+//
+//   Licensed under the terms set forth in the LICENSE.txt file available at
+//   https://opensubdiv.org/license.
+//
+
+#ifndef OPENSUBDIV3_OSD_CL_PATCH_TABLE_H
+#define OPENSUBDIV3_OSD_CL_PATCH_TABLE_H
+
+#include "../version.h"
+
+#include "../osd/opencl.h"
+#include "../osd/nonCopyable.h"
+#include "../osd/types.h"
+
+#include <vector>
+
+namespace OpenSubdiv {
+namespace OPENSUBDIV_VERSION {
+
+namespace Far{
+    class PatchTable;
+};
+
+namespace Osd {
+
+/// \brief CL patch table
+///
+/// This class is a CL buffer representation of Far::PatchTable.
+///
+/// CLEvaluator consumes this table to evaluate on the patches.
+///
+///
+class CLPatchTable : private NonCopyable<CLPatchTable> {
+public:
+    /// Creator. Returns NULL if error
+    static CLPatchTable *Create(Far::PatchTable const *patchTable,
+                                cl_context clContext);
+
+    template <typename DEVICE_CONTEXT>
+    static CLPatchTable * Create(Far::PatchTable const *patchTable,
+                                 DEVICE_CONTEXT context) {
+        return Create(patchTable, context->GetContext());
+    }
+
+    /// Destructor
+    ~CLPatchTable();
+
+    /// Returns the CL memory of the array of Osd::PatchArray buffer
+    cl_mem GetPatchArrayBuffer() const { return _patchArrays; }
+
+    /// Returns the CL memory of the patch control vertices
+    cl_mem GetPatchIndexBuffer() const { return _indexBuffer; }
+
+    /// Returns the CL memory of the array of Osd::PatchParam buffer
+    cl_mem GetPatchParamBuffer() const { return _patchParamBuffer; }
+
+    /// Returns the CL memory of the array of Osd::PatchArray buffer
+    cl_mem GetVaryingPatchArrayBuffer() const { return _varyingPatchArrays; }
+
+    /// Returns the CL memory of the varying control vertices
+    cl_mem GetVaryingPatchIndexBuffer() const { return _varyingIndexBuffer; }
+
+    /// Returns the number of face-varying channel buffers
+    int GetNumFVarChannels() const { return (int)_fvarPatchArrays.size(); }
+
+    /// Returns the CL memory of the array of Osd::PatchArray buffer
+    cl_mem GetFVarPatchArrayBuffer(int fvarChannel = 0) const { return _fvarPatchArrays[fvarChannel]; }
+
+    /// Returns the CL memory of the face-varying control vertices
+    cl_mem GetFVarPatchIndexBuffer(int fvarChannel = 0) const { return _fvarIndexBuffers[fvarChannel]; }
+
+    /// Returns the CL memory of the array of Osd::PatchParam buffer
+    cl_mem GetFVarPatchParamBuffer(int fvarChannel = 0) const { return _fvarParamBuffers[fvarChannel]; }
+
+protected:
+    CLPatchTable();
+
+    bool allocate(Far::PatchTable const *patchTable, cl_context clContext);
+
+    cl_mem _patchArrays;
+    cl_mem _indexBuffer;
+    cl_mem _patchParamBuffer;
+
+    cl_mem _varyingPatchArrays;
+    cl_mem _varyingIndexBuffer;
+
+    std::vector<cl_mem> _fvarPatchArrays;
+    std::vector<cl_mem> _fvarIndexBuffers;
+    std::vector<cl_mem> _fvarParamBuffers;
+
+};
+
+}  // end namespace Osd
+
+}  // end namespace OPENSUBDIV_VERSION
+using namespace OPENSUBDIV_VERSION;
+
+}  // end namespace OpenSubdiv
+
+#endif  // OPENSUBDIV3_OSD_CL_PATCH_TABLE_H